Cycle-pump.



No. 819,690: PATENTED MAY 1, 1906.

D. K. BRYSON. CYCLE PUMP.

APPLICATION FILED AP,R.28, 1905.

UNITED STATES PATENT OFFICE DAVID K. BRYSON, OF PITTSBURG, PENNSYLVANIA,ASSIGNOR TO BRYSON 8: HOWE, OF PITTSBURG, PENNSYLVANIA, A FIR-M.

CYCLE-PUMP.

Patented May 1., 1906.

Application filed April 28, 1905- Serial No. 257.843.

To all whom, it may concern.-

Be it known that I, DAVID K. BRYSON, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inCycle-Pumps, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to certain new and useful improvements incycle-pumps and the invention has for its object the provision of novelmeans for pumping a current of air or liquid by compression.

Another object of my invention is to provide a cycle-pump capable ofcompressing and forcing air or liquid, the capacity or speed at whichthe air or liquid is discharged varying accordingly with the variablespeeds at which the pump may be operated.

A further object of this invention is to provide a novel device forcompressing air or water which will be extremely simple in construction,strong and durable, comparatively inexpensive to manufacture, and highlyefficient for the purposes intended when operated.

Briefly described, my improved pump comprises a drum or casing having aninlet and an outlet port, and insaid drum or casing is j ournaled ashaft, upon which is mounted a wheel or head. A piece of rubber tubingthrough which the air or water to be compressed passes is arrangedwithin the drum or casing surrounding the wheel or head, and mounted inthe casing is a compressing member or roller adapted to squeeze andcollapse the rubber hose or tubing as the head or wheel is revolvedwithin the casing.

The construction above described will be hereinafter morefully set forthand then specifically pointed out in the claims, and referring to thedrawings accompanying this application like numerals of referencedesignate corresponding parts throughout the several views, in whichFigure 1 is a side elevation of my improved pump. Fig. 2 is a frontelevation view of the same. Fig. 3 is a vertical sectional view of thepump. Fig. 4 is a front elevation view of the pump, the disk of myimproved pump being removed; and Fig. 5 is a vertical sectional view ofa casting forming the drum or casing of my improved pump, showingthetubing mounted therein.

To put my invention into practice, 1 cmploy a drum or casing 1, the oneside of which is open, as indicated at 2, while the closed side thereofis provided with outward y-m tending protuberances forming bosses 3 and4, the boss 4 being provided with an aperture 5, which servesfunctionally as an oiling port or opening. The bosses 3 and 4 serve asjournal boxes or bearings for a shaft 6, the end of the shaft lyingwithin the casing being slightly contracted, while the end of the shaftlying without the casing is slightly enlarged and is adapted to beprovided with a suitable belt or pulley wheel, (not shown,) or the shaft6 may represent the drive or armature shaft of a suitable motor. Uponthe contracted end of the shaft 6 I mount a wheel or head 7, the edgesof which are provided with peripheral flanges 8 S, forming a peripheralguideway 9 for a compressing member or roller 10, which is also mountedwithin the casing 1. To retain the wheel or head 7 upon the shaft 6, Iemploy a disk 11, a washer 12, and a screw 14. The contracted end of theshaft 6 is provided with a screw-threaded aperture 15, in which thescrew-threaded shank of the screw 14 is adapted to engage and retain thewasher 12, disk 11, and wheel 7 upon the shaft.

The casing 1 is provided with two tangential enlargements 16 and 17,said enlargements having openings or ports 19 19 formed therein, wherebya piece of rubber tubing or hose 20 can be inserted within the casingand arranged to surround the wheel or head 7, as clearly illustrated inFig. 4 of the drawings. I preferably employ a tubing or hose of acollapsible nature, such as rubber, and the air or liquid to becompressed is preferably fed in one end of the hose or tubing and passedout of the casing through the opposite end of the tubing. The cycloidarrangement of the tubing within the casing provides a circuitous pathfor the air or liquid to be pumped, and to force and pump air or liquidI employ a compressing member or roller 10, conforming substantially toa cylinder, which is provided with a sleeve or coating 21, adapted toform a frictional contact of the member with the Wheel or head 7 andalso frictionally engage the tubing or hose 20. In Fig. 3 I haveillustrated the compressing member within the casing and collapsing thetubing at one point of the cycle. The compressing member or roller ismade of a suflicient size to fit within the annular compartment 22,formed between the periphery of the wheel or head 7 and the inner sidesof the casing or drum 1. I have provided the bearing of the casing witha standard or retaining-rod 23, which is employed to hold the casingstationary when the pump is being operated by a motor and support itwhen operated by a pulley and belt.

In operation the piece of tubing or hose 20 is adapted to be collapsed,yet at the same time of suflicient stability and strength to withstand apressure capable of being produced by my improved pump. As the rollerrevolves it creates a constant suction or vacuum throughout the cycle inthe rear of the roller while the air or liquid in front of the roller isforced ahead throughout the cycle. The air or liquid to be pumped isdrawn into the tubing by suction and discharged by compression, and thedischarge of the air or liquid depends upon the rapidity at which thepump is operated and also upon the area and size of the casing andtubing employed. The rotation of the head or wheel 7 by the shaft 6causes the compressing member or roller 10 to move at approxi matelyone-half the speed of the head or wheel, and as the roller travels.around within the drum or casing in obedience to its frictional contactwith the drive-wheel or drum it collapses and compresses the tubing, asclearly illustrated in Fig. 3 of the drawings. The point of collapse inthe tube is a traveling point throughout the entire cycle, which roducesa suction in the rear and pressure ahead of the traveling point ofcollapse. The rapid rotation of the head or-wheel 7 causes the air orliquid within the tubing to be ejected therefrom with considerable forceand rapidity, especially when a nozzle is used in connection with thedischarge end of the tubing or the end of the tubing is contracted.

While I have herein described the compressor as being adapted for airand liquid, it is obvious that various gaseous substances Y and liquidscan be readily propelled by my improved pump, and with these facts inview I do not care to have it understood that the pump is in any wiselimited to a specific use.

While I have herein described the preferred manner of construction of myimproved pump, it is obvious that various changes may be made in thedetails of construction without departing from the gen= eral spirit andscope of the invention.

What I claim, and desire to secure by Letters Patent, is

1. A pump of the type described corripris- 6 drum through one of saidopenings and sur- 8o rounding said wheel and protruding out of the drumthrough the other of said openings and a compressing-roller mounted insaid drum and adapted to frictionally engage said wheel and said tubing.

3. A motor of the type described consisting of a drum, a shaft journaledin said drum, a wheel mounted upon said shaft, a collapsible tubingpassing through said drum, and a roller mounted within said drum andfrictionally engaging said wheel and said tubing and revolved around theshaft by the move ment of the wheel to collapse said tubing.

4. In a pump, the combination with a suitable support,,of a drumsupported by said support, a wheel ournaled in said drum and actuatedfrom the exterior of said drum, tubing arranged within said drum, aroller mounted within said drum the periphery of the roller bearing onthe periphery of the wheel and actuated by said wheel to collapse saidtubing, substantially as described.

5. In a pump of the type described, the combination of a casing havingan opening in one side, a shaft journaled in said casing, a disk carriedon the end of said shaft and fitting the opening in the side of thecasing, a wheel carried by said shaft within the casing,

a tube arranged within the casing and surrounding said wheel, and havingits ends extending outside the casing and a roller bearing against saidtubing and against said wheel and adapted to compress the tubing whenthe wheel is rotated.

In testimony whereof I affix my signature in the presence of twowitnesses.

DAVID K. BRYSON. Witnesses:

E. E. POTTER, WM. C. HEITZ.

